Montgomery County, Virginia, United States

Last updated: 5:43 AM CDT  ·  Refresh
20°C
Feels like 22°
Mostly Clear
▲ 29°  /  ▼ 17°
Wind
4 mph WSW
Humidity
88%
Dew Point
18°
Pressure
27.92 inHg
Visibility
10 mi
UV Index
0.0
Cloud Cover
21%
Sunrise
6:55 AM
Sunset
7:44 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Montgomery County is currently mostly clear at 20°C. Precipitation is likely — peak probability 61% around 12 PM. Atmospheric instability is elevated (CAPE up to 1654 J/kg) — isolated convective development possible. Sunrise: 6:55AM · Sunset: 7:44PM.

Alerts

No active alerts for this location.
47 AQI · Good Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
20°
3%
7 AM
19°
19%
8 AM
21°
34%
9 AM
22°
42%
10 AM
24°
39%
11 AM
25°
49%
12 PM
24°
61%
1 PM
28°
51%
2 PM
29°
37%
3 PM
28°
37%
4 PM
28°
34%
5 PM
28°
48%
6 PM
27°
30%
7 PM
26°
35%
8 PM
24°
38%
9 PM
22°
36%
10 PM
21°
33%
11 PM
21°
30%
12 AM
20°
30%
1 AM
20°
28%
2 AM
19°
33%
3 AM
19°
33%
4 AM
19°
43%
5 AM
18°
49%
7-Day Forecast
Today
29° 17°
Rain, 61% chance.
Sun
24° 17°
Mostly Cloudy with a 67% chance of rain.
Mon
27° 15°
Partly Cloudy.
Tue
28° 13°
Partly Cloudy.
Wed
33° 14°
Mostly Clear.
Thu
32° 17°
Partly Cloudy with a 44% chance of rain.
Fri
26° 14°
Rain, 59% chance.
TimeTempConditionsPrecipWindHumidity
Now 20° Mostly Clear 3% 4 mph WSW 88%
7 AM 19° Mostly Clear 19% 4 mph WSW 84%
8 AM 21° Mostly Clear 34% 5 mph W 80%
9 AM 22° Partly Cloudy 42% 7 mph NW 74%
10 AM 24° Mostly Cloudy 39% 9 mph NW 69%
11 AM 25° Mostly Cloudy 49% 9 mph NW 65%
12 PM 24° Rain 61% 7 mph NW 62%
1 PM 28° Mostly Cloudy 51% 8 mph WNW 58%
2 PM 29° Partly Cloudy 37% 8 mph WNW 56%
3 PM 28° Partly Cloudy 37% 9 mph WNW 55%
4 PM 28° Partly Cloudy 34% 9 mph WNW 56%
5 PM 28° Partly Cloudy 48% 8 mph NW 60%
6 PM 27° Partly Cloudy 30% 7 mph NW 65%
7 PM 26° Partly Cloudy 35% 6 mph NW 70%
8 PM 24° Mostly Cloudy 38% 5 mph NW 76%
9 PM 22° Mostly Cloudy 36% 3 mph WNW 80%
10 PM 21° Mostly Cloudy 33% 3 mph WNW 84%
11 PM 21° Mostly Cloudy 30% 3 mph NW 86%
12 AM 20° Mostly Cloudy 30% 3 mph WNW 89%
1 AM 20° Mostly Cloudy 28% 3 mph W 91%
2 AM 19° Mostly Cloudy 33% 2 mph W 93%
3 AM 19° Mostly Cloudy 33% 2 mph W 94%
4 AM 19° Mostly Cloudy 43% 2 mph W 95%
5 AM 18° Mostly Cloudy 49% 2 mph WNW 95%
15-Day Forecast
Today
9/5
Rain
61%
17°
29°
Sun
9/6
Mostly Cloudy
67%
17°
24°
Mon
9/7
Partly Cloudy
8%
15°
27°
Tue
9/8
Partly Cloudy
3%
13°
28°
Wed
9/9
Mostly Clear
7%
14°
33°
Thu
9/10
Partly Cloudy
44%
17°
32°
Fri
9/11
Rain
59%
14°
26°
Sat
9/12
Mostly Clear
34%
13°
28°
Sun
9/13
Rain
72%
15°
31°
Mon
9/14
Rain
59%
16°
31°
Tue
9/15
Drizzle
60%
16°
30°
Wed
9/16
Drizzle
60%
14°
28°
Thu
9/17
Drizzle
60%
13°
27°
Fri
9/18
Drizzle
60%
13°
27°
Sat
9/19
Drizzle
60%
13°
27°
47
Good
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is satisfactory and poses little or no health risk.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
47 AQI 8.5 µg/m³
O3
Ground-level ozone
39 AQI 43 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 47 Good 39 47
Sun 45 Good 41 45
Mon 36 Good 36 32
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Sat Sep 5, 09:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 50 60 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE21 J/kg
MLCAPE176 J/kg
MUCAPE346 J/kg
SBCIN-413 J/kg
MLCIN-209 J/kg
Lifted Index1.0
Kinematics
0–6 km Shear25 kt
0–1 km Shear16 kt
Eff. Shear16 kt
0–1 km SRH57
0–3 km SRH48
Eff. SRH13
Storm Motion344° @ 23 kt
0–1 km EHI0.0
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index31.5
Thermo & Levels
PWAT1.32 in
0–3 km LR4.5 °C/km
700–500 LR5.9 °C/km
Total Totals45.6
LCL919 hPa
LFC628 hPa
EL535 hPa
Freezing Lvl12,822 ft